Add PHP 7.0 to the list of tested PHP versions.

Author: tomzx

.travis.yml

@@ -4,8 +4,13 @@ php:
     - 5.4
     - 5.5
     - 5.6
+    - 7.0
     - hhvm
 
+matrix:
+    allow_failures:
+        - php: 7.0
+
 before_script:
     - composer self-update
     - composer update